Construction Method of Potential Risk Chain Group in Rail Transit System Oriented to Global Safety

A rail transit and safety technology, applied in the construction of potential risk chain groups of rail transit systems, can solve problems such as being unable to adapt to the safety assessment of urban rail systems

Active Publication Date: 2022-04-22
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Therefore, traditional methods such as probabilistic risk assessment, fault tree analysis (FTA), and failure mode and effect analysis (FMEA) applied to safety and reliability engineering can no longer adapt to the safety assessment of urban rail systems under networked operating conditions.

Method used

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  • Construction Method of Potential Risk Chain Group in Rail Transit System Oriented to Global Safety
  • Construction Method of Potential Risk Chain Group in Rail Transit System Oriented to Global Safety
  • Construction Method of Potential Risk Chain Group in Rail Transit System Oriented to Global Safety

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Embodiment

[0029] figure 1 A kind of flow chart of the potential risk chain group construction method of rail transit system oriented to global safety provided by this embodiment, refer to figure 1 , the method includes:

[0030] S1 determines the size of the potential risk chain group that needs to be constructed.

[0031] Determine the number of risk points of the potential risk chain group that needs to be constructed according to Pareto's law (the 28th law). According to the Pareto law, the risk distribution in the non-uniform complex risk network is also uneven. It can be speculated that in the rail transit global safety three-dimensional risk network model, at least 80% of safety incidents / accidents are caused by 20% of the key risk points, Focusing on the observation and management of these 20% key risk points can improve the efficiency and benefits of safety management. Therefore, the size of the potential risk chain group is determined to be 20% of the total number of risk po...

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PUM

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Abstract

The present invention provides a global safety-oriented rail transit system potential risk chain group construction method, comprising: S1 determining the scale of the potential risk chain group to be constructed; The security impact index values ​​are sorted, and the risk point that has the greatest impact on global security is selected as the initial risk point; S3 is based on S2, recalculates the current system state, and uses each remaining risk point to transition to the active state to affect the overall system security. The impact index values ​​are sorted, and the risk point that has the greatest impact on global safety is selected as the next risk point; S4 repeats step S3 until the number of selected risk points reaches the determined scale, and according to the risk of the rail transit system The chain group model connects the relevant edges in a directed manner to obtain the potential risk chain group. The potential risk chain group obtained by this method can prevent risk events with serious impact and consequences in the system.

Description

technical field [0001] The invention relates to the technical field of risk control and safety analysis of a rail transit system, in particular to a method for constructing potential risk chain groups of a rail transit system oriented to global safety. Background technique [0002] The overall security of the rail transit system mainly emphasizes the changes in the characteristics of urban rail systems that are different from single-track and simple multi-track operations in the new context of networked operations. This change is mainly reflected in the prominent contradiction between transportation capacity and passenger flow demand, the enhanced synergy between lines, the impact of a single accident on the road network, the more obvious linkage between a single accident and adjacent stations and lines, and the increased difficulty of operational safety management. etc. [0003] Therefore, traditional methods such as probabilistic risk assessment, fault tree analysis (FTA)...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/06G06Q50/26G06Q50/30
CPCG06Q10/0635G06Q10/06393G06Q50/30G06Q50/265
Inventor 王艳辉贾利民崔逸如郝伯炎赵晨阳
Owner BEIJING JIAOTONG UNIV
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